#include <stdio.h>
/* Reverse a character string, reference CPL p 59 */
reverse(s)
char *s;{
	int i, j;
	char c;
	i = 0;
	j = strlen(s) - 1;
	while (i < j){
		c = s[i];
		s[i] = s[j];
		s[j] = c;
		i++;
		j--;
		}
	return(s);
	}
